Date: Thu, 9 Apr 2009 08:29:23 -0400
Reply-To: "Samuella B. Sigmann" <sigmannsb**At_Symbol_Here**APPSTATE.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: "Samuella B. Sigmann" <sigmannsb**At_Symbol_Here**APPSTATE.EDU>
Subject: Re: Mixtures of Oleum and Perchloric acid
Comments: To: Little Helga
In-Reply-To: <B478FE90ACFE421EBA0487FEAA0FCD92**At_Symbol_Here**yourfsyly0jtwn>

Hi Bob - Here is the link to the prediction at Cameo Chemicals where you can "virtually mix" the two.


Little Helga wrote:

Does anyone know of a potential hazard of mixing 70% perchloric acid with oleum (% SO3 to react with most of the water in the perchloric acid).
The research group is trying to make ~100% sulfuric acid and ~100% perchloric acid to oxidize small quanities of carbon (graphite) at temperatures ranging up to 70 C. The group understands the usual problems with handling oleum and they know that 100% perchloric acid by its self is a major safety problem.
Concentrations of the "100% perchloric acid" would be in the range of 10 to 30% in the oleum.
Bob Small
RS Associates
Tucson, AZ

The Washington Post's Style Invitational asked readers to take any word from the dictionary, alter it by adding, subtracting, or changing one letter, and supply a new definition


Don’t always believe what you think.

Samuella B. Sigmann, NRCC-CHO

Lecturer/Safety Committee Chair

A. R. Smith Department of Chemistry

Appalachian State University

525 Rivers Street

Boone, NC   28608

Phone: 828 262 2755

Fax: 828 262 6558

Email: sigmannsb**At_Symbol_Here**

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